<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form action="http://localhost:3333/index" method="get">
        username:<input type="text" name="user"><br>
        password:<input type="password" name="pass"><br>
        <input type="submit" value="submit">
    </form>

</body>
</html>